Go see the new blog 'Climate of Hate', which is in the process of compiling video documentation of the prominent hate and violence spewing from left-liberal sphere of politics, almost on a daily basis.
Of course, within the climate blog world, the hateful rhetoric and threats of violence exhibited by green activists and ideologues are prevalent and definitely creepy. This classic video definitely provides an insight into the severe mental derangement of the true believers. (Needless to say I guess, but the creators of this video and their ilk are truly sick.)
It is this level of liberal/leftist violent communication and visceral hate that then drives individuals to take action in the name of environmental "social justice."